:root{
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --ink:#0f172a;
  --ink-soft:#475569;
  --line:#e2e8f0;
  --brand:#0891b2;
  --brand-dark:#0e7490;
  --accent:#10b981;
  --max:960px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}

/* Header / nav */
header.site{
  position:sticky;top:0;z-index:50;
  background:rgba(15,23,42,.97);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid #1e293b;
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.12rem;letter-spacing:.2px}
.brand:hover{text-decoration:none}
.brand .logo{
  width:30px;height:30px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  display:grid;place-items:center;color:#062c33;font-weight:800;font-size:.95rem;
}
.brand .tag{color:#7dd3fc}
nav.links{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
nav.links a{color:#cbd5e1;font-size:.94rem;font-weight:500}
nav.links a:hover{color:#fff;text-decoration:none}
nav.links a.yt{
  background:var(--brand);color:#fff;padding:7px 14px;border-radius:8px;font-weight:600;
}
nav.links a.yt:hover{background:var(--brand-dark)}

/* Hero */
.hero{
  background:radial-gradient(1100px 400px at 70% -10%,#0e7490 0%,#0f172a 55%);
  color:#fff;padding:78px 0 70px;
}
.hero h1{font-size:2.5rem;line-height:1.12;margin:0 0 14px;font-weight:800}
.hero p.lead{font-size:1.2rem;color:#cbd5e1;max-width:640px;margin:0 0 26px}
.hero .by{color:#7dd3fc;font-weight:600;letter-spacing:.4px;text-transform:uppercase;font-size:.8rem;margin-bottom:18px}
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;font-size:1rem;
}
.btn.primary{background:var(--accent);color:#03281c}
.btn.primary:hover{background:#0ea871;text-decoration:none}
.btn.ghost{background:transparent;color:#fff;border:1px solid #334155}
.btn.ghost:hover{border-color:#64748b;text-decoration:none}

/* Sections */
section{padding:56px 0}
section.alt{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:1.7rem;margin:0 0 10px;font-weight:750}
h3{font-size:1.18rem;margin:0 0 6px}
.sub{color:var(--ink-soft);max-width:680px;margin:0 0 28px}
.lede{color:var(--ink-soft);font-size:1.05rem}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:22px;
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.card .ico{font-size:1.6rem;margin-bottom:8px}
.card h3{margin-top:0}
.card p{color:var(--ink-soft);margin:.4rem 0 0}

/* Content pages */
.page{padding:52px 0 20px}
.page h1{font-size:2.1rem;margin:0 0 6px}
.page .meta{color:var(--ink-soft);margin:0 0 26px}
.prose h2{font-size:1.25rem;margin-top:2rem}
.prose p,.prose li{color:#293548}
.highlight{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:10px;padding:16px 18px;margin:20px 0}
.consent-box{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:20px;margin:20px 0}
.tag-pill{display:inline-block;background:#cffafe;color:#155e75;border-radius:999px;padding:3px 12px;font-size:.78rem;font-weight:600;margin-bottom:14px}

/* Footer */
footer.site{background:#0f172a;color:#94a3b8;padding:34px 0;margin-top:40px;font-size:.9rem}
footer.site a{color:#7dd3fc}
footer.site .row{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
footer.site .links a{margin-left:18px}

@media(max-width:560px){
  .hero h1{font-size:2rem}
  .nav{height:auto;padding:12px 0;flex-direction:column;gap:10px}
  footer.site .links a{margin:0 12px 0 0}
}